Gulf of Mexico.
The White House (i.e. tRump) has single-handedly renamed it The Gulf of America.
FOX News immediately saluted and started using the trumped name.
But it has been called The Gulf of Mexico for more than 400 years.
—The Washington Post also said it would use Gulf of Mexico in most references because it “is not solely within the United States’ jurisdiction and the name of Gulf of America might confuse global readers.”
I'll stick with tradition:
Gulf of Mexico
Gulf of Mexico
Gulf of Mexico (etc etc etc)